Finding the Fourth Proportional to 2,711.89, 4,070.20 and 1,326.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,711.89 : 4,070.20 = 1,326.25 : x
2. Step 2: Convert to fraction form
   2,711.89/4,070.20 = 1,326.25/x
3. Step 3: Cross multiply
   2,711.89x = 4,070.20 × 1,326.25
4. Step 4: Simplify right side
   2,711.89x = 5,398,102.75
5. Step 5: Solve for x
   x = 5,398,102.75/2,711.89
6. Step 6: Final answer
   x = 1,990.53